Xpath, node absolute path and Remote Events for XML (REX)

Question

Folks,
No question here, just a solution to share.
I want to implement Remote Events for XML (REX) in
Actionscript 3. Outgoing rex events require that I find an absolute
xpath expression for my XML DOM nodes that have changes. Incoming
rex events require that I can find the appropriate XML DOM node
using xpath.
nodeAbsolutePath returns a node's absolute xpath expression.
(see below)
xpath-as3 provides xpath.
References
http://www.w3.org/TR/rex/
http://code.google.com/p/xpath-as3/wiki/GettingStarted
http://www.xml.com/pub/a/2004/11/24/py-xml.html
http://forums.oracle.com/forums/thread.jspa?messageID=1439497&#1439497
public function nodeAbsolutePath(node:XML):String {
var name:String = node.name();
var parent:XML = node.parent();
var index:int = 1;
var pos:String;
if (parent) {
for each (var child:XML in parent.children()) {
if (child == node) {
break;
if (child.name() == name) {
index += 1;
pos = "["+String(index)+"]"; /* [1], [2], ... */
switch (node.nodeKind()) {
case 'text':
return nodeAbsolutePath(parent)+"/text()"+pos;
break;
case 'comment':
return nodeAbsolutePath(parent)+"/comment()"+pos;
break;
case 'processing-instruction':
return
nodeAbsolutePath(parent)+"/processing-instruction()"+pos;
break;
case 'attribute':
return nodeAbsolutePath(parent)+"/@"+name;
break;
case 'element':
return nodeAbsolutePath(parent)+"/"+name+pos;
break;
return "/"+name+"[1]"; /* we're at the top baby*/
Here are some links.
http://hollabaugh.com/flex/NodeAbsolutePath.mxml.txt
http://hollabaugh.com/flex/NodeAbsolutePath.swf
Have fun!
Craig

Answer 1

Folks,
No question here, just a solution to share.
I want to implement Remote Events for XML (REX) in
Actionscript 3. Outgoing rex events require that I find an absolute
xpath expression for my XML DOM nodes that have changes. Incoming
rex events require that I can find the appropriate XML DOM node
using xpath.
nodeAbsolutePath returns a node's absolute xpath expression.
(see below)
xpath-as3 provides xpath.
References
http://www.w3.org/TR/rex/
http://code.google.com/p/xpath-as3/wiki/GettingStarted
http://www.xml.com/pub/a/2004/11/24/py-xml.html
http://forums.oracle.com/forums/thread.jspa?messageID=1439497&#1439497
public function nodeAbsolutePath(node:XML):String {
var name:String = node.name();
var parent:XML = node.parent();
var index:int = 1;
var pos:String;
if (parent) {
for each (var child:XML in parent.children()) {
if (child == node) {
break;
if (child.name() == name) {
index += 1;
pos = "["+String(index)+"]"; /* [1], [2], ... */
switch (node.nodeKind()) {
case 'text':
return nodeAbsolutePath(parent)+"/text()"+pos;
break;
case 'comment':
return nodeAbsolutePath(parent)+"/comment()"+pos;
break;
case 'processing-instruction':
return
nodeAbsolutePath(parent)+"/processing-instruction()"+pos;
break;
case 'attribute':
return nodeAbsolutePath(parent)+"/@"+name;
break;
case 'element':
return nodeAbsolutePath(parent)+"/"+name+pos;
break;
return "/"+name+"[1]"; /* we're at the top baby*/
Here are some links.
http://hollabaugh.com/flex/NodeAbsolutePath.mxml.txt
http://hollabaugh.com/flex/NodeAbsolutePath.swf
Have fun!
Craig